Improvement in nut-m ach i nes



UNITED @STATES FATENT Ormea.

RICHARD II. COLE, OF ST. LOUIS, MISSOURI.

HVIPROVENIENT IN NUT=IVIACHINES.

Specification forming part of Letters Patent No. 15.00B, dated June 3,1856.

To aZZ whom it may concern:

Beit known that I, RICHARD l-I. COLE, of the city and county of St.Louis, in the State of Missouri, have invented certain new and usefulImprovements in the Machines Employed in the ltIanufaeture of MetallicNuts from Heated Bars; and I do hereby declare that the following is 'afull andexact description thereof, reference being had to theaccompanying drawings making a part of this specification.

Figure l is a side elevation oi' the aforesaid machine; Fig. 2, an endview of the same; Fig. 3, atop View; Fig. 4, a horizontal section in theline l l of Fig. l; Fig. 5, a vertical lougitudinal section in the line3 3 of Fig. 4; Figs. 6 and 7, vertical sections of detached portions ofthe machine in the line 2 2 of Fig. 4; Fig. S, a' transverse section ofa detached portion of the machine in the line 5 5 of Fig. 5; Fig. 9, atransverse section of a detached portion of the machine in the line 4 4of Fig. 5; Fig. l0, a vertical longitudinal section of a portion of themachine in the line l l of Fig. l., showing the parts represented ashaving just formed a nut in the nut-box; and Fig. 11 is a front view ofthe nut-box` detached from the machine.

My first improvement in metallic nut-making machines consists in thearrangement ofa round punch, f', within an aperture in the angular punchd at the same time that a round punch, e, is arranged within an aperturein the bottom j of the nut-box, when the said round punches are combinedwithY movements which cause them to actjointlyin perforating the holesin the nuts, substantially in the manner hereinafter set forth.

My second improvement consists in the joint arrangement of the angularpunch (l and its interior round punch, /",With the bottom j of thenut-boX and itsinterior round punch, e, when the said bottom of thenut-box is combined with a spring or its equivalent in such a manner inrelation to the before-mentioned parts that the action of the said partsin forming a nut will cause the completed nut to be thicker than the barfrom which the blank was cut, substantially as hereinafter set forth.

The box in which the nuts are formed in my said machine may beconstructed in any manner that may be deemed expedient. It should be soconstructed as to have a cutting-angle on the front side of itsmouth,for thepurpose ofenabling a blank for a nut to be cut from a barby thejoint action of the said cutting-angle and the front angle of theangular punch d as it is carried forward toward the nut-box and isbrought in contact with the bar fed into the machine immediately infront of said box. The projections t o from the top, and farther side ofthe mouth of the nut-box, in connection with the adjustable rest g,enable the operator to aecurately guide the end of the bar to the properposition in front of the nut-box as itis fed into the machine.

The angular punch d is received into a mouth in the head of the slidingplate G, Where it is held in front by the clampmaud the set-serews g g,and at its top, bottom, and rear sides by set-screws which pass throughthe top, bottom, and rear side of the said mouth, as shown in Fig. 9.The inner end of the body of the angular punch d bears against theWedge?, which works in a vertical opening in the head of G, and has ascrew-shank at its upper eX- tremity, on which works the regulating-uutk.

By means of the lateral and vertical setscrews z zgg and the adjustablewedge y the angular punch d can be moved out or in and may be adjustedin any desired position. The requisite movements are imparted to theangular punch d by means of two differentlyshaped cams, a and p, on theshaft K, which Work within a doubly-recessed opening in the plate G,whose Working-faces are of such a shape that the former cam serves tomove said plate rearward and the latter to move the plate forward and toretain it in its extreme forward position for a few seconds.

A round punch, f', works in a correspondingly-shaped aperture in thecenter of the angular punch d, and is connected to a projection, s, fromthe rear sliding plate, B, which passes through a slot in the frontsliding plate, G, as represented in Figs. 4 and 5. The rear end of theround punch f bears against the horizontal Wedge i', which is adjustedin its position by means of the screw-nut qworking on a screw-shankprojecting from the smaller end of said Wedge, as shown in Fig. 4. Thehead of the said round punch f is secured within the projection s bymeans of the thin plates t and n,working in a transverse slot in s, thescrew-shank u' projecting from n and t-he nut a, as represented in Fig.8. The proper reciprocating movements are imparted to the round punch fby means of the cam 0, placed on the shaft K immediately within the camp and working in an aperture in the plate B, the shape of whichaperture,and also of the cam o, being shown in Fig. 6.

The punch d is of such a size and is so arranged that after cutting offa blank for a nut in front of the nut-box it enters the nutboX, carryingthe said blank before it, and compresses it with such force against thebottom 7' of the nut-boX as to give it the exact shape that may bedesired.

To insure perfectly-formed nuts in all cases when the bars from whichthey may be cut may be thinner than usual, and also to prevont injury tothe machine when a thicker bar than usual is fed into the machine, orwhen two nuts chalice to get into the nut-boX at the same time,l give anelastic bearing to the bottomj of the nut-boX by causing the outer endof the sliding plate F to bear against the spring A at thc timethtanutisbeing formed.

The projecting .portion of the bottom j of thenutbox is secured betweenoutwardly-projectingjaws from the inner end of the sliding plate H bymeans ofthe keys t' i, the clamp t', Fig. 4, and the set-screws fl" andc, or in any other suitable manner. The bottom j of the nut-box isthrown forward to discharge a iinished nut and then drawn back againpreparatory to forming another nut by means of the cam c on the shaft J,which works in an oblong rectangular openingin the sliding plate H, asrepresented in Fig. 7.

A round punch, e, works in a correspond ingly-shaped aperture in thecenterof the bottom j of the nutbOX. The head of the said round punch eis secured between projections from the front side of the inner end ofthe sliding plate F by means of the clamp w, the tapering key b', andthe set-screws w', as repre sented in Figs. 1 and 5, or in any othersuitable manner. The tapering key b passes through an oblong mortise inthe head of the round punch e, and a setscrew, f, is inserted into ascrew-aperture in the end of the said head and bears against the outeredge of the said key b', by means of which arrangement the round'punch ccan be thrown in or ont and secured in any desired position.

The necessary reciprocating movements are imparted to the round punch eduring the performance of the machine by means ot' the two cims a and bon the shaft J, working in a recessed opening in the sliding plate F, inthe manner hereinafter set forth.

A suitable form for the metallic frame of my improved nut-making machineis represented in the accompanying drawings and designated by theletters NR R Q Q. The respective pairs of sliding plates GB and F H aresecured within shouldered recesses in the vertical portionsR R of theframe of the machine by means of the series of inner beveledged bearers,vc, Fig. 4E, and the series of outer bevel-edged bearers,F F and G G,anda suitable number of set-screws, a a a a, a portion of which set-screwspass through the said bearers and are tapped into the said portions R Rot' the frame of the machine, and the remainder pass through theprojections from the said portions of the frame above and below thesliding plates B G and F H and act against the outer edges of thebearers F F G G n e',- or the said sliding plates may be supported inproper positions in any other suitable manner.

The shafts J K work in suitable bearings and are rotated by means ofcog-wheels E E on their inner ends, which gear into a pinion, D, on thedriving-shaft I.

The accompanying drawings represent the respective parts of my improvednut-making machine in the position they are thrown into immediatelyafter the last movement in forniA ing a nut and discharging it from themachine. From this position the said parts move as follows when themachine is put in motion: The cam p strikes against the surface p' atthe inner side of the aperture in the sliding platcG and carries forwardthe punch d toward the mouth ofthe nut-box, and at the same moment thecam c strikes against the rear edge of the aperture in the sliding plateH and produces a rearward movement ol' the bottomyl of the nut-box,preparatory to the reception within said box` of lthe red-hot blank cutoff by the punch d in its forward movement. The said sliding plate H isthrown outward until its outer end is brought in contact with theadjustable projection z from the spring A, and at the same time thatthis takes place the advancing punch d brings the blank-nut in contactwith the bottom of the nut-box and continues to advance until therequisite shape has beenV imparted to said nut. While the segmentshapedportion of the face of the cam p is acting upon the punch d through thesliding plate G the cam b strikes against the surface c at the innerside of the aperture in the plate F and carries forward the round punche, and at the same moment the projection o of the cam o strikes againstthe surface Z', Fig. 6, at the inner side of the aperturein the plate B,and carries forward the roundpunchf. The said cams b and o are soproportioned that they carry forward the round punches e and f into thehot yielding nutblank until they nearly meet in the center of the same,which movement of the said punches forms the hole in the nut-blank byforcing the metal from the center thereof into the body of the same,thereby causing the nut formed to be thicker than the bar from which itwas cut, the bottom of the nut-box giving back to allow the nut toincrease in thickness, and the increased pressure from the centeroutward thus exerted upon the nut insures absolute perfection of form atevery side and angle. The

projection o of the cam o passes above the surfacel of the plate B andceases to operate upon the round punch j" while the round punch e isstill advancing and while the segment-shaped portion ofthe cam p isacting on the angular punch d through the medium of the sliding plate G.The round punch f is carried outward by the action of the angle o' ofthecam o against the surface Z of the plate B, while the round punch e iscarried forward by the cam b until it passes through the nut and entersa short distance into the aperture in the end of the angular punch dleft by the receding punch f', where it deposits the wad which wasformed in the center of the nutblank when the ends of the two roundpunches were brought nearly in contact with each other, as beforedescribed. The moment that the cam b ceases to carry forward the roundpunch e the cam a strikes the surface m at the outer side of theaperture in the plate F and withdraws the said punch, and simultaneously with said movement the cam c strikes against the inner side of theaperture in the plate H and carries forward the bottom ofthe nut-box todischarge the linished nut. At the moment the finished nut is carriedout clear of the nut-box it is separated from the bottom ofthe nut-boxby the action ofthe spring-bar m, which is forced inward against the nutby the projection r on the cog-wheel E. Immediately aftera finished nuthas been discharged from the machine the angle o of the cam o strikesagainst the surface l', Fig. 6, of the slid- 'ing plate B and thruststhe end of the round punch j" a short distance out of the end of theangular punch d, for the purpose of discharging therefrom the thin wad(which was deposited therein, forming the previous nut) preparatory tothe forward movement of the said angular punch d, for the purpose offorming another nut by the aid of the movements of the other parts ofthe machine, in the manner substantially as hereinbefore set forth.

Having thus fully described my improvements in machines employed in themanufacture of metallic nuts, what I claim therein as new, and desire tosecure by Letters Patent, is-

l. The arrangement of the round punch f within an aperture in theangular punch d at the same time that a round punch, e, is arrangedwithin an aperture in the bottomj of the nut-box, when the said roundpunches are combined with movements which cause them to actjointly inperforating holes in the nuts formed in said nut-box, substantially asherein set forth.

2. The joint arrangement of the angular punch d and its interior roundpuneh,]", with the bottomj of the nut-box and the interior round punche, when the said bottom of the nut-box is combined with a spring or itsequivalent in such a manner in relation to the said angular punch d andthe round punches @and f that the action of the said parts in forming anut will cause the completed nut to be thicker than the bar 'from whichthe blank was cut, substantially as herein set forth.

R. H. COLE.

Vitniesses:

Z. C. RoieBINs, THOMAs W. LAY.

